%!PS-Adobe-2.0
% Copyright 2007 TeX Users Group.
% You may freely use, modify and/or distribute this file.

% This is the file invert.ps
% used for printing negative, inverted
% One way to use it is to simply add the following line
%	\special{header=invert.ps}
% anywhere in your (La-)TeX source file.

/bphook{
	gsave 0 setgray
	0 0 moveto 612 0 lineto 612 792 lineto 0 792 lineto closepath 
	fill grestore			% paint background black
	{1 exch sub}settransfer		% white on black
	612 0 translate -1 1 scale	% flip horizontally
%	0 792 translate 1 -1 scale	% flip vertically
}def
%%EOF
